Requirements for PLC cabinets
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Experts, is it possible to make PLC cabinets placed outdoors have IP55 protection along with positive pressure ventilation? Explosion-proof cabinets are too expensive; I want to save some money.
For outdoor use, it is recommended to have a protection rating of IP66 or higher; of course, IP65 combined with a rain cover is also an option... I’m not familiar with IP55 plus positive pressure ventilation... The main issue is that it isn’t explosion-proof – will your client be satisfied with that? ? ? ?
First, consider whether the electronic components can adapt to local temperature, sea salt, fog, water, air, and vapor corrosion conditions. Can it adapt? Consider whether IP55 can indeed ensure positive pressure? How is the sealing? Will there be no need to open the cabinet during production? A series of questions: Why bother yourself?
At minimum, IP65 is required; this is the lowest IP rating specified for outdoor instruments. If the equipment is located in an explosion-proof workshop, it is recommended to use explosion-proof positive-pressure cabinets. Explosion-proof cabinets are not capable of dissipating heat, while cabinets that are not explosion-proof do not meet safety requirements.